Roll-polisher



G. B. STEVENS.

ROLL POLISHER.

(5. STEVEN-S.

' ROLL POLISHER. 1,327,639.

APPLICATION minim. 20, 1918.

v INVENTOR.

ATTORNEY Patented Jan. 13,1920. '2 SHEETS -SHEET 2. M 4n GEORGE B. STEVENS, OF GRANITE CITY, ILLINOIS.

ROLL-POLISHER.

' Specification of Letters Patent.

Patented-Jan 13.1920.

Application filed April 20, 1318. Serial No. 229,873.

To all whom it may. concern:

Be it known that I, GEORGE E. STEvENs,

a citizen of the United States, residing at Granite City, in the county of Madison and State of Illinois, have invented certam new. and useful Improvements in Roll-Polishers,

of which the following is a specification.

This invention relates to certain new anduseful improvements in roll polishers, the peculiarities of which will be hereinafter described and claimed.

The object of my invention is to provide: a polisher for hot rolls or similar machines,the polisher tobe so constructed and arranged that it will not interfere with.

the use of said rolls while polishing them,

can be readily attached to the housing of, said rolls and will notice broken when the housing spreads as frequently occurs.

In the accompanying drawings in which like reference letters indicate corresponding a polisher embodying my invention applied thereto Fig. 2

plied to the upper roll;

Fig. 3 a transverse section of the rolls showing my polisher attached to the upper and the lower rollrespectively;

Fig. i a detail top view and partial section of a holder for blocks of emery;

Fig. 5 a back side view of. said. block holder;

Fig. 6 a side view of aportion of a holder guide with its hanger attached to the housing shown in section;

Fig. 7 a vertical section on the line X X Fig; 6 looking in direction of the arrows;

Fig. 8 a similar view to Fig; 7 showing a lever arm supporting, said guide; and,

Fig. 9 a horizontal plan view on the line A B of Fig. 8.

In rolling mills making iron and steel plates'of various thickness, the red hot bars or plates are passed between hot rolls which are horizontally mounted one over the other in the style'called two-high, between heavy housing frames. Two men,a roller and a catcher,on opposite sides of the mill handle the hot plates with tongs; the roller utting the plates through the rolls and tie catcher passing them back to the roller over the top roll. The rolls must a similar view of the rollers sideof said hot rolls showing. my polisher ap be kept polished, and when this is being done in the ordinary way either the opera tors when working piece work, or the rolling company when work is done bythe day, lose the time required to keep the rolls polished. My attachment to the rolls polishes them while they are rolling hot plates in the usual Wty,'il3 is continuous and automatic in its action, and requires only an instant to shift the emery block along the roll when the polishing efie'ct is sufficient at any one point.

06" designate side housings provided with the usual bearings and adjusting screws for atop rollD and bottom roll. E mounted therein. The arrows in Fig. 3 indicate the direction of rotation of said rolls, and FG the rollers' and catchers table respectively arranged :as usual opposite said rolls.

I will'first describe my polisher as applied to the lower roll E and located below the table G on the catchers side, and then a similar construction embodying my invention as applied to the upper roll D above the floor plate or table F on the rollers side. The construction for the upper roll is slightly modified from that used for the lower'roll, but the main principle and practical operation of the polishers are substantially identical.

I know from practical experience and'observation that av block of emery or other polishing material should be of comparatively short length in order to adaptitself to the change of "contour of the rolls when heated by operation on the plates passing through them. I therefore provide, as shown in Fig. i, a pair of short blocks HH preferably of emery, which are mounted in a suitable holder, and separated therein by a space about equal to their length. This holder preferably'consistsof a rectangular back I, having on its face a pair' of dovetailed groovesor pockets in line with each other and adapted to receive and hold dovetailed blocks ofemery which are slipped in at the open ends of' the holder, until they seat themselves against vertical cross partitions J J that provide the open space between said blocks, as before mentioned. Projecting from the back of the holder is'a bolt or lug K by which said holder with contained blocks is preferably engaged and slid along lug K of the holder projects as shown in Figs. 7 and 9. The groove at one or both ends of said double bar is open to allow the holder to be slid endwise into the grooved face of said double bar. The lug K is then fastened by nut or otherwise to theback of the holder and projects through the slot M.

This double bar forms a guide for the block holder and is supported parallel to the adjacent roll by swing hangers preferably in the form of a link N at each end of said guide bar, which link is pivotally connected to the end of the guide bar and to the side of the housing, preferably by means of an eye 0 at the bottom end of said hanger and in the plane of said bar which engages a matching eye P on the end of said guide bar; the upper end of said link N having a similar eye Q, but at right angles to the eye 0 so as to swing readily upon a hook bolt R that is firmly screwed into the side of said housing. Another form of hanger for each end of said guide bar may be provided as long as it will allow the side housings of said rolls to spread several inches as is often the case in the operation of the mill, without disengaging the guide bar from its supports. With a swing hanger of the shape shown, or similar, the guide bar will simply rise when the side housings spread, and will drop back to its normal positionwhen the housings resume their usual position again. The length of said hangers between the eyes O and Q is a little more than half the distance that the housings are liable to spread in practice.

As seen by reference to Fig. 3 the said hangers merely support the guide bar- A pressure upon said guide bar to bring the blocks of emery against the adjacent roll. is effected by means of a lever arm at each end of said guide bar, such as that shown in Fig. 8 provided with a horizontal arm S and a vertical arm T, forming a bell crank lever with a fulcrum bolt passing through a hole U at the bottom of the arm T. This lever arm lies close to the inside of the housing with the arm S projecting outward slightly beyond the edge of the housing wherev it is engaged by a spring band connection preferably consisting of a flexible chain with a coil spring V. The other end of said chain is wound on a rod W mounted in brackets 2-2 Fig. 1 fastened to the edge of said housings or otherwise. The rod extends past one housing to allow for mounting an operating arm 3 on the outside as shown in Figs. 1 and 2. By rotating the rod through the operating arm 3, the band is wound up thereon and exerts a spring pressure of any desired amount upon the bell crank lever. This lever has a socket or loose connection with the guide bar, such as that provided by an L shaped piece 4L Figs. 3 and 8 bolted, cast integrally or otherwise secured to the lever arm. In the angle of said piece normally rests the adjacent end of the guide bar as shown in Fig. 9. In case of the side housing spreading as before mentioned the ends of said guide bar will slip out of their angular recess in the adjacent lever arm and be supported simply by the hangers N before mentioned. I prefer to maintain this spring pressure automatically so that the operating handle will remain in its rotated position and therefore provide a ratchet wheel 5 mounted on said rod and a pawl 6 Figs. 1 and 3. This pawl and ratchet may be located on the inside of the housing as shown in the drawings, or elsewhere on said rod, as may be convenient. The operator therefore will have only to throw down the operating handle 3 to effect the desired tension on the band and corresponding pressure of the emery upon the roll.

When the pair of blocks have polished the roll sufiiciently the holder is moved along in the guide bar by engaging the projecting lug K or otherwise. The space between the blocks will now come opposite the part of the roll already polished by one of said blocks, and four or more adjustments of the holder will polish the length of the roll according to the preferred proportion between the length of the blocks and the roll.

Referring now to the attachment for the rollers side I provide a lever arm that is curved more as shown in Fig. 3 in order to extend down under the floor plate and clear the inner rest bar supporting said plate, and also to adapt it to clear the lower roll. The end of the arm S is engaged to a similar flexible connection described for the catchers side, which in this case exerts the pressure downward, as the chain passes under a guide pulley 8 in a bracket 9 and then upward around the rod W. from the vertical as shown in Fig. 3 in order to bring the guide bar and blockholder as much under the roll D as possible, and yet leave a clear path for the pack or plate to enter the rolls from the'floor plate F.

I' likewise provide guard points 10, Figs. 2 and 3, integrally or otherwise secured to the guide baron the rollers side, which points approach close to the roll D. The plate or ack passing back over the roll D from t e catcher on the left in Fig. 3 to the roller on the right will slide on said guard points 10 and pass the guide bar without injury to it.

The lever arm at each end of the guide bar, avoids twisting of the bar. The spring tension on each lever arm may be equalized by adjusting the band on the rod. A simple rectangular guiding bracket 12 is fastened to the inside of the housing and passes around the arm S to keep it close to the housing. A limit stop, such as an adjust- The arm T is inclined able screw 11 mounted in the bracket 12 and adapted to engage the arm S, may be used; or by providing a series of holes in the housing to receive a bolt as shown for the arm S. In either case the stop for said arm is varied to allow for the wear of the emery, or otherwise.

The scale from the lower roll will drop out of the way, but the scale of the upper roll is preferably caught by a dust pan 18 extending along the bottom lip of the guide bar as shown in Fig. 3. ceive the emery dust and scale particles and prevent them falling on the pack or'plate being rolled.

Said carrier or guide bar can be readily taken off the hooks, and the emery cleaned or replaced.

I claim:

1. In combination with mill housings forming spreading supports, of a roll polisher comprising an emery-carrylng bar, and swing hangers pivotally connecting the ends of said bar and supporting housings, and oscillatable lengthwise of the bar, and maintaining engagement during the spreading action, substantially as described.

2. In combination with supporting housings temporarily variable in their distance apart, of a roll polisher comprising an em ery-carrying bar, lever arms carried by said housings and having sockets normally engaging the ends of said bar, and swing hangers pivoted to swing in two directions and connecting said bar to said housings and efiecting rengagement automatically of said bar and lever sockets after temporary disengagement, and retaining the bar in operative position substantially as described.

3. A roll polisher comprising a pair of emery blocks having converging sides, a

block holder having lips converging on the inside to match said blocks and form a dove tailed cross-section for the outside of said This pan will reholder, a double bar having a matching groove to receive said holder slidingly there in and having a slot between said bars to allow of engaging said holder and having an eye at each end of the bar, a link pivotally engaging said eye at each end of the bar, and a hook fastened to the housing for supporting the upper end of said link, lever arms pivoted to said housing at each end of said bar and having a slip connection therewith, a transverse rod adjacent to said lever arms and a flexible spring connection between said rod and each lever arm to exert an operative pressure on the latter by rotation of said rod.

4. A vroll polisher comprising a block holder and emery blocks mounted therein, a guide bar having a groove in which said holder is slidingly mounted and an eye at each end, double-eyed links engaged to the eye of said holder at one end of the link, engaging the other eye of said links respectively, and means to exert a pressure on said guide bar and block holder, substantially as described.

5. A roll polisher comprising a double bar having a guide groove and slot and guard points projecting toward the adjacent roll, a block holder slidably mounted in said guide groove and operable through said slot, emery blocks carried by said holder, means to press said blocks with regulated pressure against the adjacent roll, swing hangers connecting the ends of said guide bar and suitable supports respectively and a dust pan carried by the bottom of said guide bar to receive the scale and emery particles from the operation of polishing.

In testimony whereof I have aflixed my signature in the presence of two witnesses.

GEORGE B. STEVENS.

Witnesses:

H. M. PnAis'rnn, GEO. FURNISH. 

